Multi 1200s - 2013 - 54k miles. Some questions for you all. Noticed a bit of engine vibration over 4k rpm on all gears. Pulling clutch in it stops which I guess it means nothing to do with tyres and suspension. Chain has checked and rechecked and is ok. I had a quick finger tension test of the horizontal belt and felt a bit loose - 8k miles since replaced with Exact belts. Q1 - do you re-tension your belts in bewtween replacements? Q2 - could the belts be the vibration cause Q3 - have you had any vibration at high rpm and how did you resolve it Thanks all
If the HB felt a bit loose to you I would deffo check the tension chief, excellent mileage btw 54k makes my 2010 43K not run in yet, Belts check and shim check I did during lockdown kept me out of mischief for a few days all good, next belts due 48k and shims 54k, can't help re the vibrations as I have no extra vibes at high rpm mate, she's vibey anyhoo.
Never heard of our belts causing vibration due to looseness - had a couple of TB1100 (2Valve Belts) 'hum' when people have tensioned them to the old Ducati setting of 130Hz I think it was? - where ours are 99Hz nominal and OEM now 110Hz. If it's a bearing on it's way out re tensioning could destroy it quicker. It would be good to get a hertz reading if you can. Hopefully it's not something expensive! I would not recommend re tensioning to new spec at that mileage, probably 90Hz max, but hopefully you will find the source of the vibration and it's not expensive!
Exi would you suggest same for my 43K 2010 mut? 90Hz max, I checked mine and was 107 hz +/- too tight?
What belts are they? Ours should be 99Hz nominal when new. Ducati I think have an official re tension level but I'm not sure what it is @nelly will confirm. Also the Fuji Lock Nuts should be a one time fit too - so ideally if re-tensioning it should be new nuts and wave washers too.
@Exige - when you say "bearings" do you mean the rollers, the adjustable and fixed ones?. Also, any idea what the Exact should be at after being used - for sure not setting them back to 99. When fitted mine I followed your 99Hz and replaced the Fuji nuts as well (glad you include them with the belts). According to my records the measurements of the old OEM ones before removed were 84Hz - not far out from the Ducati 80Hz +/- 5%. @BobTheBounder - 43K only? Shame !
OEM is 110HZ nominal not 80Htz? IF set at 99Hz I wouldn't expect them to move much - but I have no data. Someone mentioned this week that the Exact belts didn't change much at all when they checked. Oh and any bearings on the belt drive train yes.
I believe they're Ducati gates belt? If they had required adjusting I would have been knocking at your door chief lol. TBH I will be purchasing a DVT belt kit from you soon anyhoo as she is three years old next month.
Ducati states - Brand new belts - set to 110Hz - "assembly value". After being used they should be at 80Hz +/- 5% -"inspection value".
They will stretch and is not advisable to be re-tentioned back to the original spec. So it's important to know what is the "inspection value" of the Exact belts. I hope Exige will let us know.
I already mentioned above, don't retention above 90Hz. I'm not sure what an inspection value saying OEM should be between 80Hz +/- 5Hz as surely at some point after tensioning to 110Hz they will be between 85Hz and 110Hz - I'm sure that doesn't mean you have to slacken them off after 'inspection' I sounds more like a 'retention' value target to me if they fall lower than 75Hz?
I would download a good sound frequency app on my phone and check the two belts and see where they are. If one is clearly looser than the other then something is not right.
